Built-in asynchronous starting rotor structure, can be directly connected to the power grid without external drivers. Simple installation, directly replace ordinary asynchronous motor, perfect for fixed-speed equipment renovation.
Application：Industrial water pumps, constant-speed fans, general processing equipment
The rotor of the asynchronous-start three-phase permanent magnet synchronous motor is equipped with a starting winding and high-performance rare-earth permanent magnets. During startup, the starting winding generates torque to accelerate the motor; as the speed approaches synchronous speed, the permanent magnets pull the motor into synchronization, allowing it to enter normal synchronous operation. In this state, the motor’s excitation magnetic field is provided by the permanent magnets.
RUNDA ultra-high-efficiency, energy-saving asynchronous-start three-phase permanent magnet synchronous motors are a standardized product series developed using proprietary, patented technology. The low-voltage series is available in both “Basic” and “Enhanced” versions, while the medium- and high-voltage series are designed exclusively as the “Enhanced” version. Basic models feature the same mounting dimensions as standard three-phase induction motors of the same specifications, allowing for direct replacement. Enhanced models utilize a compact structural design, offering an expanded range of specifications, broader applicability, and superior performance.
RUNDA ultra-high-efficiency asynchronous-start three-phase permanent magnet synchronous motors are widely used across various industries; they deliver stable, reliable long-term performance and provide significant energy savings.
Product Series
1) TYYIA/B Low-voltage series (380V/50Hz, 460V/60Hz, 2.2kW–450kW);
2) TYY3A/B Medium-voltage series (660V/50Hz, 15kW–800kW);
3) TYYGB High-voltage series (6kV/50Hz, 200kW–2500kW);
4) TYYHB High-voltage series (10kV/50Hz, 200kW–2500kW);
5) TYYB1A/B Low-voltage flameproof series (380V/50Hz, 2.2kW–450kW);
6) TYYB3A/B Medium-voltage flameproof series (660V/50Hz, 15kW–800kW);
7) TYYB4A/B Medium-voltage flameproof series (1140V/50Hz, 15kW–1250kW).
Runda’s line-start three-phase rare-earth permanent magnet synchronous motors are suitable for a wide range of industrial loads—including fans, pumps, compressors, cranes, and textile machinery—and are widely used in sectors such as building materials, iron and steel, metallurgy, textiles, and chemicals. These motors offer long-term operational reliability and deliver significant energy savings.
| Performance Parameters | TYY1A/ B TYYB1A/ B | TYY3A/ B TYYB3A/ B | TYYB4A/ B | TYYGB / HB |
| Rated Voltage (V) | 380(460) | 690 | 1140 | 6000/10000 |
| Rated Frequency (Hz) | 50(60) | 50 | 50 | 50 |
| Power Range (kW) | 2.2-450 | 15-1000 | 15-1250 | 200-4500 |
| Shaft Center Height (mm) | 90-355 | 160-500 | 160-500 | 355-600 |
| Locked-rotor Torque Multiple | 1.6-3.2 | 0.8-2.5 | 0.8-2.5 | 0.8-1.6 |
| Pull-out Torque Multiple | 1.5-2.0 | 1.4-1.8 | 1.4-1.8 | 1.5-1.8 |
| Speed Rating (r/min) | 3000/1500/750/600/500/375 | |||
| Power Factor | 1 | |||
| Insulation Class | F | |||
| Protection Class | IP55 | |||
| Duty Type | S1 | |||
| Cooling Method | IC411 | |||
| Mounting Method | B3/B5/B35 | |||
| Operating Conditions | Ambient temperature -45°C to +65°C, relative humidity <90%, altitude <1500m | |||
Core Technical Advantages
Key Advantages
1. Outstanding Energy Saving Performance
Efficiency far exceeds IE5 ultra-high energy efficiency standard. Save 15%~40% power consumption compared with traditional asynchronous motors. Short investment recovery period.
2. High Power Factor & Low Line Loss
High power factor close to 0.95 in full working range, reduce reactive power loss of power grid, lower transformer and cable load.
3. Wide High-efficiency Operating Zone
Maintain high efficiency even under partial load. Greatly suitable for equipment running under variable load conditions.
4. Multiple Startup & Control Modes
Options: direct line start / variable frequency driving. Provide complete motor + supporting VFD integrated solutions.
5. Compact Structure & High Reliability
Smaller frame size, light weight. Anti-demagnetization structural design, stable long-term continuous operation, low maintenance workload.
6. Easy Replacement & Installation
Mounting dimensions comply with international standard. Direct replacement of old asynchronous motors, no need to modify equipment base.
Typical Application Industries
Application Scenarios
– Factory energy-saving renovation project
– Metallurgical & mining equipment
– Water pump & ventilation fan system
– Chemical processing equipment
– Heavy-duty conveyor and mixing machinery
Customization Service
Customizable Options
✅ Rated Power：Custom power range on demand
✅ Voltage：380V/415V/660V etc.
✅ Protection Grade：IP54 / IP55 / IP56
✅ Installation form：B3, B5, B35 and other mounting standards
✅ Special improvement: low temperature, dust-proof, anti-corrosion structure
✅ Supporting matching dedicated RUNDA frequency converter
Get Technical Parameters & Official Quotation
Please tell us your working condition, required power, voltage and speed requirement. Our engineer will provide professional solution and competitive price quickly.
